diff --git a/lib/configfiles/trusty.xml b/lib/configfiles/trusty.xml
index f610fdec..2636f7fc 100644
--- a/lib/configfiles/trusty.xml
+++ b/lib/configfiles/trusty.xml
@@ -545,7 +545,7 @@ root:               root@<SERVERNAME>
 mydomain = <SERVERNAME>
 
 # should be different from $mydomain eg. "mail.$mydomain"
-myhostname = mail.$mydomain
+myhostname = $mydomain
 
 mydestination = $myhostname,
 	$mydomain,